[v7,0/7] Basic recovery for machine checks inside SGX

Message

Luck, Tony Sept. 27, 2021, 9:34 p.m. UTC

Now version 7

Note that [e-mail] and [e-mail] are still
dropped from the distribution. Time to get some internal agreement on these
changes before bothering the x86 maintainers with yet another version.

So I'm looking for Acked-by: or Reviewed-by: on any bits of this
series that are worthy, and comments on the problems I need to fix
in the not-worthy parts.

Changes since v6:

Jarkko Sakkinen:
	Don't use "owner" == NULL vs. != NULL as an indicator
	of whether an SGX EPC page is free vs. in-use. Just add
	a new flags bit. Note this drops most of the changes I
	had in part 0001. Remainder of the patches are largely
	unchanged except where they check for the new flags bit
	instead of owner != NULL.

Tony Luck (7):
  x86/sgx: Add new sgx_epc_page flag bit to mark in-use pages
  x86/sgx: Add infrastructure to identify SGX EPC pages
  x86/sgx: Initial poison handling for dirty and free pages
  x86/sgx: Add SGX infrastructure to recover from poison
  x86/sgx: Hook arch_memory_failure() into mainline code
  x86/sgx: Add hook to error injection address validation
  x86/sgx: Add check for SGX pages to ghes_do_memory_failure()

 .../firmware-guide/acpi/apei/einj.rst         |  19 +++
 arch/x86/include/asm/processor.h              |   8 ++
 arch/x86/include/asm/set_memory.h             |   4 +
 arch/x86/kernel/cpu/sgx/main.c                | 121 +++++++++++++++++-
 arch/x86/kernel/cpu/sgx/sgx.h                 |   6 +-
 drivers/acpi/apei/einj.c                      |   3 +-
 drivers/acpi/apei/ghes.c                      |   2 +-
 include/linux/mm.h                            |  14 ++
 mm/memory-failure.c                           |  19 ++-
 9 files changed, 185 insertions(+), 11 deletions(-)


base-commit: 5816b3e6577eaa676ceb00a848f0fd65fe2adc29